Development of contraceptives--obstacles and opportunities.
Mastroianni
L
L
Hospital of the University of Pennsylvania, Philadelphia 19104.
Donaldson
P J
PJ
Kane
T T
TT
D003270:Contraceptive Agents / Q000592:standards; D003273:Contraceptive Devices / Q000592:standards; D004345:Drug Industry; D007603:Jurisprudence; D012106:Research; D014481:United States; D014486:United States Food and Drug Administration
D003270:Contraceptive Agents